Carbureting device



April 2, 1929. R. s. STRONG 1,707,824

GARBURETING nvrc Filed Aug. 29, 1925 l, 2,322; UAW/f. it@ A td/Q Q9/ am Patented Apr. Z, 1929.

UNITED STATES PATENT OFFICE.

l RALPH S. STRONG, OF CHICAGO, ILLINOIS.

CARBURETING DEVICE.

- Application iled August 29,

vide a construction which will lessen the liability ottlooding the carburetor. A.

' serted a construction known in the trade asa' A further object of my invention is to provide a construction which will economize fuel.

A further object is to provide a construction which will enable a car equipped with this device to get under way quickly.

Further objectsV will appear from the description and claims.

In a general way, I accomplish the objects of my invention by causing pulsations to occur in the mixture stream. This may be done in various ways, one being by the vibration of the throttle valve or a valve or shutter in the mixture stream. I have found by test that all of the desired results indicated above are accomplished by this construction.

. In the drawings, in which an embodiment of my invention is shown- .Figure 1 is a plan view of a gasoline engine and carburetor provided with my improved device; Y

Fig. 2 is a side elevation of the carburetor, parts being broken away to show the vibrating valve;

Fig. 3 is a plan view of the construction in Fig. 2;

Fi g. 4 shows a detail of the connection from the throttle lever to the vibrating valve; and

Fig. 5 is a section on the line 5-5 of Fig. 3.

Referring to the drawings in detail, 'the' construction shown comprises an internal combustion engine l which may be of any usual or suitable construction, provided with a belt wheel 2 on the fan shaft 3, an intake manifold 4, and a carburetor 5 having a iioat chamber 6, an air inlet valve 7, a needle valve 8, and a throttle valve 9 which I also utilize as a vibrating valve for causing pulsations to occur in the mixture stream.l The carburetor construction may be of anyV suitable type and is not describedin detail.

Between the vibratory throttle valve is in'- Mayson valve 10, comprising a pair of clam shell valve members 11 which move 1n accord- 1925. Serial N0. 53,220.

ance with the suction in the intake manifold,

the valve opening being decreased as the sucl tion increases. The Mayson valve p'er -se forms no part `of my inventiomalthough it is possible that it may be combined advantageously with my device for causing pulsations in the mixture stream.

In order to permit the slight vibration of the throttle re uired to give the desired pulsa-V tions, I provi e a loose connection between the link 12 and the lever 13 secured to the shaft 14 ot' the butterfly throttle valve. This link forms part of the transmission from the usual throttle leverY or accelerator to the throttle valve. This lost motion'connection shown in detail in Fig. 4 is provided byffreducmg the diameter of a portion of the stud or pin 15 which extends downwardly from f the link 12, as shown at 16, so that this fits loosely and has some play in the opening in the valve lever 13, thus permitting the required vibratory movement. 1 If at any time it should be desired to eliminate the vibra,- tory movement, this may be done by Withdrawing the cotter pin 17 and lifting u studruntil the enlarged portion 18 ci) stud fits in the opening 19, and as'this tits snugly in they opening, there can be no vibratorymovement. The pin may be heldy in this raised position by re-inserting the cotter pin 17 above the valve lever 13. An

the Y the opening 20 is provided at the lower endfof the pin to recelve another, cotter pin to hold the pin 15 in. place. l

I have provided av construction having two selectively usable means for causing the valve to vibrate, one of which means givesa comparatively large amount of vibration and the other of which gives a lesser vibration. For

ration kI mount an eccentric 21 on -a pin 22 miounted on and extending upwardly from the valve lever 13, and cause this eccentric to rotate by means of a iiexible shaft 23 driven in any suitable manner, as from the belt vpulley 2. This .eccentric member 21 vhas a n a n Y. giving a comparatlvely large amount of v1 V2 and for this purpose mount the friction pulley 25 whichY engages thebelt wheel 2 in such manner that it may be raised out of engagement with the belt wheel. For this purpose I mount the friction wheel in a sprinof bearing 26 and extend an operating rod-2li back to the dash 2S. Ther construction is such that if the rod V27 is drawn rearwardly it will cause the spring bracket 26 to Swingl upwardly and lift the friction Wheel 25 out of driven engagement with the belt pulley 2. Inorder to hold the bracket in its raised position, l provide the end of therod with a cross-pin 29 which cooperates with slots in a sleeve 30 secured to the dasl There are two pairs of these slots pairlcomprising two diametrically opposite 1slots, one pair being deeper than the other.

When the rod 27 is turned so that the pin 2) is inthe deeper pair of slots, the friction wheel E25 will be in driven engagement with the belt pulley 2, while when the pin in tl ""shallower pair of slots, the friction wheel will 'be Vout of engagement with the belt pulley.,

"However, I find that even with the friction wheel out of driven relation with respect to 'the belt pulley, there is still some slight vibratory movement of the'valve 9 enough to cause slight pulsations to occur in the mixture stream. Thisr maybe due to t tion of the car or engine 'affecting the valve lever 13, which carries the Weight of the eccentric 2l and is yieldingly held by means of thespring 32. At any rate, l have found that such lessened. vibrations dov occur and that they cause vibrations in the mixture 'ffstream and affect the running of the engine favorably.'

As indicated above, l should be desired to entirelyY eliminate vibration lof'any sort, this can be done by connecting the pin to the valve lever in such a way ently of the action of the flow of the mixture.

nc vibraif for any reason it 4scribed my name.

2. In a carburetor construction, means for causing the formation and flow of a mixture of fuel and air, and means for causing periodic pulsations to occur. in the mixture stream, said means comprising a throttle valve and mechanical means for causing periodic vibrations of said throttle valve independently of the actionfof the flow of the mixture, said last'means comprising a rotatable driving member and transmission between said driving member and valve.

3. ln ya carburetor construction, means for causing theformation and flow of a mixture of fuel and air, and means for causing periodio pulsations to occur in the mixture stream, said means comprising a throttle valve, and mechanical means for causing periodic vibrations of said throttle valve iiidependently of the action of the flow of the mixture,` said last means comprising a rotatable eccentrically weighted member, said valve having a lever, on which said rotatable eccentricimember is mounted. Y

Il. ln a carburetor construction, means for causing the formation `and flow of a mixture of fuel and air, and means for causing pul- 'sations to occur in the Vmixture stream, said means comprising a throttle valve and a plurality of selectively usable means for causing said valve to vibrate. Y

5. In a carburetor construction, means for causing the formation and flow of a mixture of fueland air, and means for causing pulsations to occur in the mixture stream, said means comprising a throttle valve and a plu-V rality of selectively usable means for causof fuel and air, and selectivelyusable means'V for causing pulsations to voccur in the mixture stream, said means comprising a throttle valve and means for causing said valve to vibrate.

7, In a carburetor construction, means-.for causing the formation and flow of a mixture ofrfuel and air, means-for causing'pi'ilsation to occur in the mixture stream comprisino' a throttle member andinechanical means iior causing periodic vibration ofsaid throttle member independently of lthe'action ofthe flow of the mixture, manually operable means for rendering Said pulsation causing ieans operative or inoperative as desired.

In witness'whereof, I have hereunto subriainrn s. STRONG.

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